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Selling, general and administrative expenses

12 Months Ended

Dec. 31, 2021

Selling, General and Administrative Expense [Abstract]

Selling, general and administrative expenses

Selling, general and administrative expenses

Selling, general and administrative expenses consisted of the following for the years ended December 31, 2021, 2020 and 2019:

			Year Ended December 31,
			2021						2020						2019
Personnel expenses			$	150,286					$	104,765					$	122,453
Share-based compensation			96,087			(a)			69,187						69,410
Professional services			28,999						24,480						24,287
Office expenses			15,417						12,974						14,095
Travel expenses			5,649						7,809						17,604
Other expenses			21,450						22,946						19,609
			$	317,888					$	242,161					$	267,458

(a)Share-based compensation expense is gross of a $10.5 million tax benefit.

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The entire disclosure for selling, general and administrative expenses.

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